RETAMA CAPACITY ASSESSMENT FERTILE (Spartium junceum)

Abstract

In the present study were established comparisons between the standard model of the male gamete or microsporogenesis angiosperm plant, following a training guidelines or rules that can be monitored, and microsporogenesis in Spartium junceum (broom) plants were selected in different training stages: preflowering, flowering and post flowering and anthesis anthers to evaluate both the maturation of pollen viability. It was used the methodology correlational and regression studies to assess the causality and the relationship between different variables under study, for this purpose it was evaluated the correlations between the different stages of cells follow a preset pattern of proportionality and regressions to predict the number of cells in each stage are also expected to predict values between the different stages. Also been used chi-square tests to determine if the deviations between predicted and observed values correspond or not to a target ratio for gametogenesis model for angiosperm plants. It has been determined that Spartium junceum not follow the guidelines of the model and relations and proportions between the different stages is impaired and there is a low production of viable pollen has a high fertile, which suggests that there is strong selection pressure for better pollen grains formed. This study supports the hypothesis proposed in the previous works with three different species (Antirrhinum m., Brassica c., Zea m.) According to which there is a low reproductive capacity in angiosperm plants due to changing climatic laos at what which the plant responds with a selection of their pollen in favor of better shaped and viable.